2020 "Tijd voor Tijd", De Pyramide Muziekwijzer voor primair onderwijs, Gehrels vereniging (september).
2018 “Shaping Time”. Presentation at the MERYC- England conference, Bristol. November 10th.
2017 “Children’s Home Musical Experiences Across the World” symposium June 12, Conference Sociology of Music Education, London. Beatriz Ilari, Theano Koutsoupidou, José Retra, Susan Young
2016 “Innovative collaboration” in early childhood music education.” Poster presentation PMEgroup - José Retra, Laura Habegger, Anna Pileri, Jessica Pitt. ECME 17 July - 22 July 2016, Ede, The Netherlands.
2016 “About Music” Poster/concert presentation Ukkepuk concerten - José Retra & Margré van Gestel. ECME 17 July - 22 July 2016, Ede, The Netherlands.
2013 Co-editor with Jessica Pitt of the
2012 "A Song - What's next?" Workshop 30th ISME World Conference July2012 Thessaloniki, Greece
2011 "Muziek is Beweging", De Pyramide Muziekwijzer voor primair onderwijs, Gehrels vereniging. José Retra
2009 "About Ducks and Hands and Feet" Demonstration at the 4th MERYC conference in Bologna, Italy
2009 "Muziek is Beweging" Paper presented at the Derde conferentie Onderzoek in Cultuureducatie 22 juni, Nederland.
2008 "Music is Movement" Paper presentation at the Second European Conference on Developmental Psychology of Music, Roehampton University, UK
2008 "Music is Movement" Poster presentation at the 13th Early Childhood Music education Seminar (ECME) 14-19 July, Frascati, Rome, Italy
2007 "Provisional results from a Study into the Developmental Aspects of Movement Representation of Musical Activities of Preschool Children in a Dutch Music Educational Setting." RIME conference Exeter April 10th - 14th 2007
2005 "Musical Movement Responses in Early Childhood Music Education Practice in The Netherlands." MERYC, Music Educators and Researchers of Young Children Conference 4 - 5 April at the University of Exeter.
2004 "Early childhood music education in the Netherlands: Music on the lap in relation to musical and emotional development." Conference Music in the Early Years: communication, cognition and the development of the self. Sept. 10th 2004 North Umbria University Newcastle
2003 “Why to conduct research in Early Childhood Music Education, in relation to the situation of Music on the Lap: Early Childhood Music courses in the Netherlands. MERYC inaugural conference Copenhagen.